The Book of Occultation — al-Ṭūsī · Hadith 632 (#Ḥadīth #11)

ومنهم أبو طاهر محمد بن علي بن بلال: وقصته معروفة فيما جرى بينه وبين أبي جعفر محمد بن عثمان العمري نضر الله وجهه وتمسكه بالأموال التي كانت عنده للإمام وامتناعه من تسليمها وادعائه أنه الوكيل حتى تبرأت الجماعة منه ولعنوه،وخرج فيه من صاحب الزمان عليه السلام ما هو معروف.

And among them Abu Tahir Muhammad bin Ali bin Bilal: His story and what happened between him and Abu Ja’far Muhammad Ibn Uthman Amari, may Allah lighten his visage, is well-known. He seized the goods of the Imam, which were in his hands and refused to deliver them, and claimed that he was the representative. The community turned away from him and invoked damnation for him and the famous letter came from the Master of the Age .

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).